Numbers 26:3

After the plague, the LORD spoke to Moses and to Eleazar the son of Aaron the priest, saying,

“Take a census of all the congregation of the children of Israel, from twenty years old and upward, by their fathers’ houses, all who are able to go out to war in Israel.”

“Take a census, from twenty years old and upward, as the LORD commanded Moses and the children of Israel.”

These are those who came out of the land of Egypt.

Reuben, the firstborn of Israel; the sons of Reuben: of Hanoch, the family of the Hanochites; of Pallu, the family of the Palluites;

of Hezron, the family of the Hezronites; of Carmi, the family of the Carmites.